#!/usr/bin/env python

# Copyright (c) 2009, Purdue University
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"""make acls for Roster"""


__copyright__ = 'Copyright (C) 2009, Purdue University'
__license__ = 'BSD'
__version__ = '0.18'


import cPickle
import sys
import datetime

from roster_user_tools import cli_common_lib
from roster_user_tools import roster_client_lib
from roster_user_tools.data_flags import AuditLog


class Args(AuditLog):
  pass


def main(args):
  """Collects command line arguments.

  Inputs:
    args: list of arguments from the command line
  """
  command = 'list'
  if( args and not args[0].startswith('-') ):
    command = args.pop(0)
  usage = ('\n'
           '\n'
           'To list audit log:\n'
           '\t%s [-a <action>] [-b <begin-time> -e <end-time>]\n'
           '\t[--success <success>] [--no-header] [--omit-data]\n' % tuple(
             [sys.argv[0] for _ in range(1)]))
  args_instance = Args(command, ['list'], args, usage)
  options = args_instance.options

  try:
    cli_common_lib_instance = cli_common_lib.CliCommonLib(options)
  except cli_common_lib.ArgumentError, error:
    print 'ERROR: %s' % error
    sys.exit(1)

  if( options.success and options.success not in [1, 0] ):
    cli_common_lib.DnsError('--success must be a 1 or 0', 1)

  if( options.begin_time and options.end_time ):
    if( len(options.begin_time.split('T')) == 2 and
        len(options.end_time.split('T')) == 2 ):
      delimeter = 'T'
    elif( len(options.begin_time.split(' ')) == 2 and
          len(options.end_time.split(' ')) == 2 ):
      delimeter = ' '
    else:
      cli_common_lib.DnsError('Improperly formatted timestamps.', 1)
    try:
      options.begin_time = datetime.datetime.strptime(
          options.begin_time, '%%Y-%%m-%%d%s%%H:%%M:%%S' % delimeter)
      options.end_time = datetime.datetime.strptime(
          options.end_time, '%%Y-%%m-%%d%s%%H:%%M:%%S' % delimeter)
    except ValueError:
      cli_common_lib.DnsError('Improperly formatted timestamps.', 1)

  log = roster_client_lib.RunFunction(
      u'ListAuditLog', options.username, credfile=options.credfile,
      credstring=options.credstring, server_name=options.server,
      kwargs={u'user_name': options.roster_user, u'action': options.action,
              u'success': options.success,
              'begin_timestamp': options.begin_time,
              'end_timestamp': options.end_time})['core_return']
  print_list = []
  if( not options.no_header ):
    header_list = ['ID', 'Action', 'Timestamp', 'Username', 'Success']
    if( not options.omit_data ):
      header_list.append('Data')
    print_list.append(header_list)
  for entry in log:
    date = datetime.datetime.strptime(
        entry['audit_log_timestamp'].value, "%Y%m%dT%H:%M:%S")
    entry_list = [entry['audit_log_id'], entry['action'],
        str(date).replace(' ', 'T'), entry['audit_log_user_name'], 
        entry['success']]
    if( not options.omit_data ):
      entry_list.append(str(cPickle.loads(entry['data'])['audit_args']))
    print_list.append(entry_list)

  print cli_common_lib.PrintColumns(
      print_list, first_line_header=not options.no_header)

if __name__ == "__main__":
  main(sys.argv[1:])
